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Proof step 18 from proof unmodified-payload (previous step)

BRANCH_SIZE = # zbrar, iast[adr] = indexnode(brar, bv1, nused), zbrar[n] = mkzentry(key, adr0), indexnode(brar, bv1, nused) = save(mkznode(rp, zbrar, bv1, false, nused)), n < nused, n < BRANCH_SIZE, sorted(zbrar, 0, nused), key ∈ payload(load(brar, 0, nused), 0, nused), adr ∈ iast, nused ≤ BRANCH_SIZE, ∀ n0. n0 < n ∧ zbrar[n0].entry? → zbrar[n0].key ≠ key ⊦ payload(load(brar, 0, nused), 0, nused)[key] = adr0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 19:
m + nused ≤ # zbrar, n < nused, zbrar[m + n] = mkzentry(key, adr), ∀ n0. n0 < n ∧ zbrar[m + n0].entry? → zbrar[m + n0].key ≠ key ⊦ payload(zbrar, m, nused)[key] = adr
Proof step 20:
BRANCH_SIZE = # zbrar, zbrar[n] = mkzentry(key, adr0), iast[adr] = indexnode(brar, bv1, nused), indexnode(brar, bv1, nused) = save(mkznode(rp, zbrar, bv1, false, nused)), n < BRANCH_SIZE, n < nused, sorted(zbrar, 0, nused), adr ∈ iast, key ∈ payload(load(brar, 0, nused), 0, nused), nused ≤ BRANCH_SIZE, ∀ n0. n0 < n ∧ zbrar[n0].entry? → zbrar[n0].key ≠ key ⊦ payload(load(brar, 0, nused), 0, nused)[key] = adr0, 0 + nused ≤ # load(brar, 0, nused) ∧ n < nused ∧ load(brar, 0, nused)[0 + n] = mkzentry(key, adr0) ∧ (∀ n0. n0 < n ∧ load(brar, 0, nused)[0 + n0].entry? → load(brar, 0, nused)[0 + n0].key ≠ key)

Rule argument

spec: <toplevel> name: at-payload seq: m + nused ≤ # zbrar, n < nused, zbrar[m + n] = mkzentry(key, adr), ∀ n0. n0 < n ∧ zbrar[m + n0].entry? → zbrar[m + n0].key ≠ key ⊦ payload(zbrar, m, nused)[key] = adr subst: [n, adr, key, nused, m, zbrar] → [n, adr0, key, nused, 0, load(brar, 0, nused)] flags: <all paths>

Additional information

Used terms: n, adr0, key, nused, 0, load(brar, 0, nused)